What to expect for umbilical hernia repair?

35M here. So I bit the bullet and I’m going to get a smallish (about 1.5in) umbilical hernia repaired. It’s been sore lately, a little sensitive to touch and I guess it’s better to do it now than let it get worse.

What can I expect post op? Any surprises I should look out for? I bought some Colace, but have been debating GasX as well. When did you guys feel normal again? Am I making a good choice here?